Service difficulty report · Actuator · Boeing 757222

Difficulty date
October 7, 2018
Submitted
October 8, 2018
Operation
Air carrier
Aircraft
N510UA
Make and model
Boeing 757222
Aircraft serial
24780
Aircraft time
94,660 hours, 26,818 cycles
Part
Actuator
Part number
273N10051
Part serial
0368
Condition
Defective
Location
Nlg
Stage of operation
AP
How discovered
O
Nature of condition
J
Precautionary procedure
O

As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.

What was found

NOSE GEAR DID NOT COME DOWN PER FIM 32-30-00-815-805, NLG LOCK ACTUATOR REQUIRES REPLACEMENT; REMOVED NLG LOCK ACTUATOR PER AMM 32-34-02. INSTALLED NLG LOCK ACTUATOR PER AMM 32-34-02-404-009 EXCEPT STEP 6 DUE TO BAD CASTLE NUT( LP 7983981). REQUIRES OPS AND LEAK CHECKS. ROTABLE PARTS CHANGE WAS INDICATED - TT 1490881 SN OFF 0368 ACTUATOR, ASSY- OFF 75-3232-9-0003 0368 ON 75-3232-9-0003 0613 COMPLIED WITH RII INSP OF INSTALLATION OF NLG LOCK ACTUATOR EXCE PT STEP 6 DUE TO BAD NUT REF LOG 7983981 INSTALLED BOLT, WASHER, CASTLATED NUT, AND COTTER PIN PER AMM 32-34-02-404-009 STEP E (6) ON THE LOCK ACTUATOR FOR THE NOSE LANDING GEAR. OPERATIONAL CHECK GOOD. LEAK CHECK GOOD. GEAR EXTENTION AND RETRACTION TEST GOOD. C/W RII INSP OF STEP E6 AS WELL AS LEAK CHECK, OPSCHECK AND GEAR SWING. ALL WAS SATISFACTORY